1.3.2 Performance Test

Tensile strength: Executive GB1040-2MFR: Executive GB3682 -83 Density: Executive GBPT6343 -1995 [4]

2 Results and discussion

Basic formula [mass (parts)]

CHINA EVA FOAM: 100; 1, 22 divinylbenzene: 0.5; DCP: 0.5; Hst: 1.0; ZnO: 1.5; AC: 15

2.1 DCP amount of impact on CHINA EVA FOAM foam

CHINA EVA FOAM, Hst the quantitative, Zn / PAC ratio unchanged, DCP is a variable, as the crosslinking agent system 1, 22, divinyl benzene, with the amount of DCP to maintain a certain ratio, the system of the sample and measure the performance.

Experiments show that:

When the DCP ≥ 0.6: product surface cracking, wrinkled; DCP <0.6: better visual surface of the article; the above results are analyzed: the experimental conditions, when the DCP is greater than or equal to 0.6, the crosslinking rate too large, then the AC had a chance to fully decompose, CHINA EVA FOAM melt viscosity has been great, the bubble does not fully inflate, so the bubble pressure in vivo large (the force is temporary equilibrium), but does not destroy the internal pressure of CHINA EVA FOAM crosslinking system, when unload the outside pressure, cracks, wrinkles. From theorized that: when the amount of less than a certain value, DCP, this value corresponds to the amount of a gel, and this gel is to get a good amount of the minimum of foam (about 65%).

As can be seen from Figure 2: Under the experimental conditions, the tensile strength with DCP content first increases and then decreases, and in the DCP = 0.3 Department has the maximum value.